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Documentation for Speaker as a Microphone |
The low-frequency cabinet was made from a set of plans from Nightfire
Acoustic Technology using 3/4-inch birch plywood. My first cabinet project
ever, I spent a couple of days measuring and remeasuring (after
translating from metric dimensions), cutting, and fitting. Fortunately, I
was at a location during spring break where I had a covered outside area to
do the work and be sheltered from the current rainy season. Unfortunately, the polyurethane finish had to be applied when I returned home and had no sheltered area; thus, I had to coordinate with the rain gods and my schedule to apply three coats and allow 6 hours drying time for each coat. Not an easy task this year since the gods are recently trying to make up for a couple of years of Central Texas drought. My first thought was to record a thunderstorm, but the night that I opened my front door, placed the speaker and a microphone out the door, and began recording, the only two respectable claps of thunder occurred when I was playing back the tape to check on what drips of rain sounded like. So, the next idea was to go to the small town of Hutto, Texas, where there are usually freight trains running on the tracks, I found myself stalled on the interstate highway due to a collision a quarter mile down the road. Once I got to Hutto, I could only see green lights in both directions on the railroad tracks; no trains to be seen or heard. I did not think it wise to wait along the tracks late at night with my truck wide open and with lots of expensive audio equipment in the middle of Nowhere, Texas! My next attempt to record would be at the Austin airport. |
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